1 /* This file is part of the Sub::Op Perl module.
2 * See http://search.cpan.org/dist/Sub-Op/ */
4 #define PERL_NO_GET_CONTEXT
9 #define __PACKAGE__ "Sub::Op"
10 #define __PACKAGE_LEN__ (sizeof(__PACKAGE__)-1)
12 /* --- Compatibility wrappers ---------------------------------------------- */
14 #define SO_HAS_PERL(R, V, S) (PERL_REVISION > (R) || (PERL_REVISION == (R) && (PERL_VERSION > (V) || (PERL_VERSION == (V) && (PERL_SUBVERSION >= (S))))))
16 /* ... Thread safety and multiplicity ...................................... */
18 #ifndef SO_MULTIPLICITY
19 # if defined(MULTIPLICITY) || defined(PERL_IMPLICIT_CONTEXT)
20 # define SO_MULTIPLICITY 1
22 # define SO_MULTIPLICITY 0
25 #if SO_MULTIPLICITY && !defined(tTHX)
26 # define tTHX PerlInterpreter*
29 #if SO_MULTIPLICITY && defined(USE_ITHREADS) && defined(dMY_CXT) && defined(MY_CXT) && defined(START_MY_CXT) && defined(MY_CXT_INIT) && (defined(MY_CXT_CLONE) || defined(dMY_CXT_SV))
30 # define SO_THREADSAFE 1
32 # define MY_CXT_CLONE \
34 my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1)); \
35 Copy(INT2PTR(my_cxt_t*, SvUV(my_cxt_sv)), my_cxtp, 1, my_cxt_t); \
36 sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
39 # define SO_THREADSAFE 0
41 # define dMY_CXT dNOOP
43 # define MY_CXT indirect_globaldata
45 # define START_MY_CXT STATIC my_cxt_t MY_CXT;
47 # define MY_CXT_INIT NOOP
49 # define MY_CXT_CLONE NOOP
52 /* --- Global data --------------------------------------------------------- */
54 #define MY_CXT_KEY __PACKAGE__ "::_guts" XS_VERSION
61 #endif /* SO_THREADSAFE */
68 STATIC SV *so_clone(pTHX_ SV *sv, tTHX owner) {
69 #define so_clone(S, O) so_clone(aTHX_ (S), (O))
74 if (SvTYPE(sv) == SVt_PVHV && HvNAME_get(sv))
77 param.stashes = stashes;
79 param.proto_perl = owner;
81 dupsv = sv_dup(sv, ¶m);
85 SvREFCNT_dec(stashes);
88 return SvREFCNT_inc(dupsv);
91 #endif /* SO_THREADSAFE */
93 #define PTABLE_NAME ptable
94 #define PTABLE_VAL_FREE(V) PerlMemShared_free(V)
98 /* PerlMemShared_free() needs the [ap]PTBLMS_? default values */
99 #define ptable_store(T, K, V) ptable_store(aPTBLMS_ (T), (K), (V))
101 STATIC ptable *so_op_name = NULL;
104 STATIC perl_mutex so_op_name_mutex;
112 /* --- Public API ---------------------------------------------------------- */
116 void sub_op_init(sub_op_config_t *c) {
128 void sub_op_register(pTHX_ const sub_op_config_t *c, U32 flags) {
129 SV *key = newSViv(PTR2IV(c->pp));
131 if (!(flags & SUB_OP_REGISTER_STEAL))
132 c = sub_op_dup(aTHX_ c);
134 if (!PL_custom_op_names)
135 PL_custom_op_names = newHV();
136 (void) hv_store_ent(PL_custom_op_names, key, newSVpv(c->name, c->namelen), 0);
138 if (!PL_custom_op_descs)
139 PL_custom_op_descs = newHV();
140 (void) hv_store_ent(PL_custom_op_descs, key, newSVpv(c->name, c->namelen), 0);
146 (void) hv_store(MY_CXT.map, c->name, c->namelen, newSViv(PTR2IV(c)), 0);
150 sub_op_config_t *sub_op_dup(pTHX_ const sub_op_config_t *orig) {
152 sub_op_config_t *dupe = PerlMemShared_malloc(sizeof *dupe);
156 dupe->name = PerlMemShared_malloc(len + 1);
157 Copy(orig->name, dupe->name, len, char);
158 ((char *) dupe->name)[len] = '\0';
164 len = orig->protolen;
166 dupe->proto = PerlMemShared_malloc(len + 1);
167 Copy(orig->proto, dupe->proto, len, char);
168 ((char *) dupe->proto)[len] = '\0';
172 dupe->protolen = len;
175 dupe->check = orig->check;
181 void sub_op_free(pTHX_ sub_op_config_t *c) {
182 PerlMemShared_free((char *) c->name);
183 PerlMemShared_free(c);
188 /* --- Private helpers ----------------------------------------------------- */
190 STATIC IV so_hint(pTHX) {
191 #define so_hint() so_hint(aTHX)
194 #if SO_HAS_PERL(5, 9, 5)
195 hint = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
197 __PACKAGE__, __PACKAGE_LEN__,
202 SV **val = hv_fetch(GvHV(PL_hintgv), __PACKAGE__, __PACKAGE_LEN__, 0);
209 return (SvOK(hint) && SvIOK(hint)) ? SvIVX(hint) : 0;
212 STATIC OP *(*so_old_ck_entersub)(pTHX_ OP *) = 0;
214 STATIC OP *so_ck_entersub(pTHX_ OP *o) {
215 o = CALL_FPTR(so_old_ck_entersub)(aTHX_ o);
218 OP *ex_list, *rv2cv, *gvop, *last_arg = NULL;
221 if (o->op_type != OP_ENTERSUB)
223 if (o->op_private & OPpENTERSUB_AMPER) /* hopefully \&foo */
226 ex_list = cUNOPo->op_first;
227 /* pushmark when a method call */
228 if (!ex_list || ex_list->op_type != OP_NULL)
231 rv2cv = cUNOPx(ex_list)->op_first;
236 OP *next = rv2cv->op_sibling;
243 if (!(rv2cv->op_flags & OPf_KIDS))
246 gvop = cUNOPx(rv2cv)->op_first;
247 if (!gvop || gvop->op_type != OP_GV)
250 gv = cGVOPx_gv(gvop);
255 const char *name = GvNAME(gv);
256 I32 len = GvNAMELEN(gv);
257 const sub_op_config_t *c;
260 svp = hv_fetch(MY_CXT.map, name, len, 0);
264 c = INT2PTR(const sub_op_config_t *, SvIVX(*svp));
266 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
271 o->op_type = OP_CUSTOM;
272 o->op_ppaddr = c->pp;
275 last_arg->op_sibling = NULL;
280 o = CALL_FPTR(c->check)(aTHX_ o, c->ud);
283 so_op_name_t *on = PerlMemShared_malloc(sizeof(*on) + len);
284 Copy(name, &on->buf, len, char);
285 (&on->buf)[len] = '\0';
288 MUTEX_LOCK(&so_op_name_mutex);
289 #endif /* USE_ITHREADS */
290 ptable_store(so_op_name, o, on);
292 MUTEX_UNLOCK(&so_op_name_mutex);
293 #endif /* USE_ITHREADS */
302 STATIC OP *(*so_old_ck_gelem)(pTHX_ OP *) = 0;
304 STATIC OP *so_ck_gelem(pTHX_ OP *o) {
305 o = CALL_FPTR(so_old_ck_entersub)(aTHX_ o);
311 rv2gv = cUNOPo->op_first;
315 gvop = cUNOPx(rv2gv)->op_first;
316 if (!gvop || gvop->op_type != OP_GV)
319 gv = cGVOPx_gv(gvop);
327 if (gv && SvTYPE(gv) >= SVt_PVGV && (cv = GvCV(gv)) == MY_CXT.placeholder) {
338 /* --- XS ------------------------------------------------------------------ */
340 MODULE = Sub::Op PACKAGE = Sub::Op
346 so_op_name = ptable_new();
348 MUTEX_INIT(&so_op_name_mutex);
352 MY_CXT.map = newHV();
353 MY_CXT.placeholder = NULL;
356 #endif /* SO_THREADSAFE */
358 so_old_ck_entersub = PL_check[OP_ENTERSUB];
359 PL_check[OP_ENTERSUB] = so_ck_entersub;
360 so_old_ck_gelem = PL_check[OP_GELEM];
361 PL_check[OP_GELEM] = so_ck_gelem;
376 owner = MY_CXT.owner;
377 map = (HV *) so_clone((SV *) MY_CXT.map, owner);
378 placeholder = (CV *) so_clone((SV *) MY_CXT.placeholder, owner);
383 MY_CXT.placeholder = placeholder;
388 #endif /* SO_THREADSAFE */
396 if (SvTYPE(sv) >= SVt_PVCV) {
398 SvREFCNT_dec(MY_CXT.placeholder);
399 MY_CXT.placeholder = (CV *) SvREFCNT_inc(sv);
413 o = INT2PTR(OP *, SvIV(SvRV(op)));
414 if (!o || o->op_type != OP_CUSTOM)
417 MUTEX_LOCK(&so_op_name_mutex);
418 #endif /* USE_ITHREADS */
419 on = ptable_fetch(so_op_name, o);
421 MUTEX_UNLOCK(&so_op_name_mutex);
422 #endif /* USE_ITHREADS */
425 ST(0) = sv_2mortal(newSVpvn(&on->buf, on->len));
429 _constant_sub(SV *sv)
435 if (SvTYPE(sv) < SVt_PVCV)
437 ST(0) = sv_2mortal(newSVuv(CvCONST(sv)));
441 _get_prototype(SV *name)
445 const sub_op_config_t *c;
448 he = hv_fetch_ent(MY_CXT.map, name, 0, 0);
451 c = INT2PTR(const sub_op_config_t *, SvIVX(HeVAL(he)));
454 ST(0) = sv_2mortal(newSVpvn(c->proto, c->protolen));